United States · 1991–2020 normal
James Island in
September.
Typical September weather in James Island: 28.4°C by day, 22.6°C at night, 135 mm of rain over 7.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high28.4°C
Typical low22.6°C
Rain135 mm
Wet days7.5
Comfort score 54 this month (April leads the year at 87). Daylight is calculated as 12 h 20 from latitude 32.72°. Open-water sea temperature is 27.1°C (14 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 27.1°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 12022259
- NOAA station
- USW00013782 · DWTN CHARLESTON
- Station distance
- 6.8 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.